Scalloped Potatoes Without Cheese

Step 1
Preheat the oven to 425 degrees F (220 degrees C). Grease a 9×13-inch baking dish.

Step 2
Layer 1/3 of the potatoes in the bottom of the prepared baking dish; season with salt and pepper. Sprinkle 3 tablespoons flour over top, then dot with 1/3 of the butter. Repeat layering twice more, then pour in enough milk to fill the dish 3/4 full.

Step 3
Bake in the preheated oven, checking every 15 minutes, until milk comes to a boil, 45 to 60 minutes. Reduce the heat to 375 degrees F (190 degrees C) and continue to bake until potatoes are tender, 45 to 60 more minutes.